A company purchased $11,400 of merchandise on June 15 with terms of 3/10, n/45, and FOB shipping point. The freight charge, $1,200, was added to the invoice amount. On June 20, it returned $1,920 of that merchandise. On June 24, it paid the balance owed for the merchandise taking any discount it is entitled to. The cash paid on June 24 equals:

a. $ 10,396

b. $ 12,600

c. $ 12,120

d. $ 9,224

e. $ 12,020